What is 'pretty clear'? 30 years ago the WBO did not exist, and the IBF had barely started. Both are basically WBA off shoots, so why do they get your kudos, but not say for arguments sake, the WBU or WAA?

The four major sanctioning bodies are the WBA, WBC, IBF and WBO. I thought that was common knowledge.

If you want to dissect every little detail, then do it by yourself. I've got better things to do than to humour trolls